TF101! - Running Domination built on my beautiful ArchLinux box!
Samsung Galaxy S4 - Stock Sadly...
Custom Built Desktop - Intel I7 w/ Windows7 & ArchLinux Dual boot - Go LINUX!
I firmly believe that any man's finest hour, the greatest fulfillment of all that he holds dear, is that moment when he has worked his heart out in a good cause and lies exhausted on the field of battle - victorious. - Vince Lombardi

I have just bought a small cheap Usb to lan RJ45 adapter. It came with a CD Rom to load a driver. How do I do this to work on my TF201? And will it work?

i am only aware of one made by samsung that works with our devices it also happens to be the current world's thinnest external dvd writer/reader and if you find it price should be around $50. as for your cd, why not copy the entire thing to an sdcard and then install from that? or if you have the dock usb would be another option, just a thought. that said sys requirements should be listed on the packaging and if it doesn't show android compat. then the issue is moot.